Folklore: The genus Eupatorium is comprised of over 40 spieces, many of which have medicinal use. Accoring to folklore, the name Eupatorium is derived from King Mithridates Eupator, among the first to use the herb medicinally. The common name “Gravel Root” refers to the herbs administration in kidney stones (gravel). Other common names include “joe-pye” which, according to folklore, is in honor of an American Indian who cures typhus with the plants root (Natural Standard, 2014).